What is the point of a headphone amplifier – Focal

A headphone amplifier is designed to increase the power of the audio signal from a source to effectively power headphones.

Using a headphone amplifier can improve your listening experience when it incorporates an internal Digital-to-Analog Converter (DAC) capable of improving the conversion of a digital source.

Benefits of using a headphone amplifierDisadvantages of not using a headphone amplifier

Improved audio quality
Audio quality limited by the output power oh the service device

Precise volume control
Less precise volume control

Improved sound dynamics
Rick of distortion at high 
Better frequency balance 
Lack of power for high impedance headphones
 
Compatibility with high impedance headphones
 
Lack at ability to fully power headphones

Can provide advanced audiophile features
Limite customization and tuning options